Alteration changes the food is what I am saying. That alteration can affect reaction to the food. Even fermenting a food can change a person's reaction.
Also, to those in natural health, nature is preferred as it has things in it man has yet to isolate.

Plus, academia is a profession that has been monopolized by the state. This was one of your and some other's sources. I am not very pro-state because it's ham-fisted way of doing things generally. This is not to say all they do is bad.